Header brick in regenerator lattice structure

Abstract

A freely diagonally staggered regenerator lattice structure includes successive courses of rows of rectangular runner bricks and courses of rows of rectangular header bricks. Each header brick has formed in opposite side surfaces thereof recesses extending from a lower surface thereof to an upper surface thereof. The height of each header brick is 55 to 60% of the sum of the height of header brick and the height of a runner brick. The height of each runner brick is 40 to 45% of such sum. The header bricks of upper courses may have end projections which fit into recesses in the runner bricks of the next lower course of runner bricks.

I claim: 
     
       1. In a freely diagonally staggered regenerator lattice structure of the type including successive courses of rows of rectangular runner bricks and courses of rows of rectangular header bricks, the improvement wherein: each said header brick has formed in opposite side surfaces thereof recesses extending from a lower surface thereof to an upper surface thereof, each said recess being at least partially formed by a plurality of grooves, such that laterally outermost surfaces of said brick in the area of each of said recess are located inwardly of the respective said side surface of said brick;   the height of each said header brick is 55 to 60% of the sum of the height of said header brick and the height of a said runner brick;   the height of each said runner is 40 to 45% of said sum; and   the width of each said header brick, in the area thereof between said recesses in said opposite side surfaces thereof, is reduced by 20 to 40%.   
     
     
       2. The improvement claimed in claim 1, wherein said grooves extend between said upper and lower surfaces. 
     
     
       3. The improvement claimed in claim 1, wherein said grooves of one said recess are displaced with respect to said grooves in the other said recess by one-half of the width of said groove. 
     
     
       4. The improvement claimed in claim 3, wherein said header bricks of vertically adjacent said courses of header bricks are staggered such that said grooves thereof are not in vertical alignment. 
     
     
       5. The improvement claimed in claim 1, wherein each said groove has a partial circular cross-sectional configuration. 
     
     
       6. The improvement claimed in claim 1, wherein the ratio of the length of the surface of each said recess to the linear length of the region occupied by said recess is 1.10:1 to 1.30:1. 
     
     
       7. The improvement claimed in claim 1, wherein each said header brick, at least in upper said courses of said header bricks, has recesses formed in said lower surface thereof at opposite ends thereof, thereby forming end projections resting on the next lower said course of runner bricks. 
     
     
       8. The improvement claimed in claim 7, wherein said runner bricks, at least in upper said courses of said runner bricks, have recesses formed in the upper surfaces thereof, said end projections of said header bricks fitting in respective said runner brick recesses. 
     
     
       9. The improvement claimed in claim 8, wherein the depth of said runner brick recesses is 10 to 15% of the total height of said header bricks and said runner bricks. 
     
     
       10. The improvement claimed in claim 1, wherein opposite ends of each said header brick rest on and extend across the entire width of respective said runner bricks. 
     
     
       11. The improvement claimed in claim 10, wherein said runner bricks, at least in upper said courses of said runner bricks, have recesses formed in the upper surfaces thereof, said header bricks fitting in said runner brick recesses.